An integrative model of the control of ovule primordia formation

被引：112

作者：

Galbiati, Francesca ^{[1
]}

Sinha Roy, Dola ^{[1
]}

Simonini, Sara ^{[1
]}

Cucinotta, Mara ^{[1
]}

Ceccato, Luca ^{[1
]}

Cuesta, Candela ^{[2
,3
]}

Simaskova, Maria ^{[2
,3
]}

Benkova, Eva ^{[2
,3
]}

Kamiuchi, Yuri ^{[4
]}

Aida, Mitsuhiro ^{[4
]}

Weijers, Dolf ^{[5
]}

Simon, Ruediger ^{[6
]}

Masiero, Simona ^{[1
]}

Colombo, Lucia ^{[1
,7
]}

机构：

[1] Univ Milan, Dipartimento Biosci, I-20133 Milan, Italy

[2] IST Austria, A-3400 Klosterneuburg, Austria

[3] Flanders Inst Biotechnol, Dept Plant Syst Biol, B-9052 Ghent, Belgium

[4] Nara Inst Sci & Technol, Grad Sch Biol Sci, Nara 6300192, Japan

[5] Wageningen Univ, Biochem Lab, NL-6703 HA Wageningen, Netherlands

[6] Univ Dusseldorf, Inst Entwicklungsgenet, D-40225 Dusseldorf, Germany

[7] CNR, Ist Biofis, I-20133 Milan, Italy

来源：

PLANT JOURNAL | 2013年 / 76卷 / 03期

基金：

欧洲研究理事会;

关键词：

ovule development; AINTEGUMENTA; Arabidopsis; CUP-SHAPED COTYLEDON; PIN1; MONOPTEROS; DEPENDENT AUXIN GRADIENTS; SHORT-VEGETATIVE-PHASE; PATTERN-FORMATION; TRANSCRIPTION FACTOR; EARLY SPOROGENESIS; DIRECT TARGET; ARABIDOPSIS; CYTOKININ; GENE; GYNOECIUM;

D O I：

10.1111/tpj.12309

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Upon hormonal signaling, ovules develop as lateral organs from the placenta. Ovule numbers ultimately determine the number of seeds that develop, and thereby contribute to the final seed yield in crop plants. We demonstrate here that CUP-SHAPED COTYLEDON1 (CUC1), CUC2 and AINTEGUMENTA (ANT) have additive effects on ovule primordia formation. We show that expression of the CUC1 and CUC2 genes is required to redundantly regulate expression of PINFORMED1 (PIN1), which in turn is required for ovule primordia formation. Furthermore, our results suggest that the auxin response factor MONOPTEROS (MP/ARF5) may directly bind ANT, CUC1 and CUC2 and promote their transcription. Based on our findings, we propose an integrative model to describe the molecular mechanisms of the early stages of ovule development.

引用

页码：446 / 455

页数：10

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